|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM146740610 |
| 003 |
DE-627 |
| 005 |
20231223041838.0 |
| 007 |
tu |
| 008 |
231223s2004 xx ||||| 00| ||eng c |
| 028 |
5 |
2 |
|a pubmed24n0489.xml
|
| 035 |
|
|
|a (DE-627)NLM146740610
|
| 035 |
|
|
|a (NLM)14971018
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Lee, Tzu-Ming
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Physicochemical characterization of the dimeric lanthanide complexes [en{Ln(DO3A)(H2O)}2] and [pi{Ln(DTTA)(H2O)}2]2-
|b a variable-temperature 17O NMR study
|
| 264 |
|
1 |
|c 2004
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
|
| 338 |
|
|
|a Band
|b nc
|2 rdacarrier
|
| 500 |
|
|
|a Date Completed 04.04.2005
|
| 500 |
|
|
|a Date Revised 24.11.2016
|
| 500 |
|
|
|a published: Print
|
| 500 |
|
|
|a Citation Status MEDLINE
|
| 520 |
|
|
|a Copyright 2004 John Wiley & Sons, Ltd.
|
| 520 |
|
|
|a The Gd(III) complexes of the two dimeric ligands [en(DO3A)2] {N,N'-bis[1,4,7-tris(carboxymethyl)-1,4,7,10-tetraazacyclododecan-10-yl-methylcarbonyl]-N,N'-ethylenediamine} and [pi(DTTA)2]8- [bisdiethylenetriaminepentaacetic acid (trans-1,2-cyclohexanediamine)] were synthesized and characterized. The 17O NMR chemical shift of H2O induced by [en{Dy(DO3A)}2] and [pi{Dy(DTTA)}2]2- at pH 6.80 proved the presence of 2.1 and 2.2 inner-sphere water molecules, respectively. Water proton spin-lattice relaxation rates for [en{Gd(DO3A)(H2O)}2] and [pi{Gd(DTTA)(H2O)}2]2- at 37.0 +/- 0.1 degrees C and 20 MHz are 3.60 +/- 0.05 and 5.25 +/- 0.05 mM(-1) s(-1) per Gd, respectively. The EPR transverse electronic relaxation rate and 17O NMR transverse relaxation time for the exchange lifetime of the coordinated H2O molecule and the 2H NMR longitudinal relaxation rate of the deuterated diamagnetic lanthanum complex for the rotational correlation time were thoroughly investigated, and the results were compared with those reported previously for other lanthanide(III) complexes. The exchange lifetimes for [en{Gd(DO3A)(H2O)}2] (769 +/- 10 ns) and [pi{Gd(DTTA)(H2O)}2]2- (910 +/- 10 ns) are significantly higher than those of [Gd(DOTA)(H2O)]- (243 ns) and [Gd(DTPA)(H2O)]2- (303 ns) complexes. The rotational correlation times for [en{Gd(DO3A)(H2O)}2] (150 +/- 11 ps) and [pi{Gd(DTTA)(H2O)}2]2- (130 +/- 12 ps) are slightly greater than those of [Gd(DOTA)(H2O)]- (77 ps) and [Gd(DTPA)(H2O)]2- (58 ps) complexes. The marked increase in relaxivity (r1) of [en{Gd(DO3A)(H2O)}2] and [pi{Gd(DTTA)(H2O)}2]2- result mainly from their longer rotational correlation time and higher molecular weight
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
4 |
|a Research Support, Non-U.S. Gov't
|
| 650 |
|
7 |
|a Heterocyclic Compounds, 1-Ring
|2 NLM
|
| 650 |
|
7 |
|a Indicators and Reagents
|2 NLM
|
| 650 |
|
7 |
|a Lanthanoid Series Elements
|2 NLM
|
| 650 |
|
7 |
|a Ligands
|2 NLM
|
| 650 |
|
7 |
|a Organometallic Compounds
|2 NLM
|
| 650 |
|
7 |
|a Oxygen Isotopes
|2 NLM
|
| 650 |
|
7 |
|a Protons
|2 NLM
|
| 650 |
|
7 |
|a Dysprosium
|2 NLM
|
| 650 |
|
7 |
|a 1D4N45714Q
|2 NLM
|
| 650 |
|
7 |
|a EDDA
|2 NLM
|
| 650 |
|
7 |
|a 5657-17-0
|2 NLM
|
| 650 |
|
7 |
|a Hydrogen
|2 NLM
|
| 650 |
|
7 |
|a 7YNJ3PO35Z
|2 NLM
|
| 650 |
|
7 |
|a Edetic Acid
|2 NLM
|
| 650 |
|
7 |
|a 9G34HU7RV0
|2 NLM
|
| 650 |
|
7 |
|a Deuterium
|2 NLM
|
| 650 |
|
7 |
|a AR09D82C7G
|2 NLM
|
| 650 |
|
7 |
|a Gadolinium
|2 NLM
|
| 650 |
|
7 |
|a AU0V1LM3JT
|2 NLM
|
| 700 |
1 |
|
|a Cheng, Tsan-Hwang
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Ou, Ming-Hung
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Chang, C Allen
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Liu, Gin-Chung
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Wang, Yun-Ming
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Magnetic resonance in chemistry : MRC
|d 1985
|g 42(2004), 3 vom: 27. März, Seite 329-36
|w (DE-627)NLM098179667
|x 1097-458X
|7 nnns
|
| 773 |
1 |
8 |
|g volume:42
|g year:2004
|g number:3
|g day:27
|g month:03
|g pages:329-36
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 42
|j 2004
|e 3
|b 27
|c 03
|h 329-36
|